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M.R. Torshizian; M.H. Kargarnovin. (2010). Anti-plane shear of an arbitrary oriented crack in a functionally graded strip bonded with two dissimilar half-planes. , 54(3), 180–188. doi:10.1016/j.tafmec.2010.11.002 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research